Mt 8 1/2" 215.9mm Steel/Milled Tooth Bits for Soft to Hard Formation

• Customized: Customized
• Standard: API
• Material: Tungsten Carbide
• Usage: Well Drilling
• Metric Diameter: 219.5mm
• IADC Code: 2-1-7
• Model NO.: YHA 8 1/2-217G
• Pin Connection: 4 1/2 API Reg
• Transport Package: Ply Wooden Box/Cartons
• Specification: 38KG
• Trademark: YINHAI
• Origin: Cangzhou City, Hebei Province, China
• HS Code: 8207199000

Product Description

YINHAI-YHA SERISES RUBBER JOURNAL SEALED BEARING TRICONE BITS RECOMMENED PARAMETERS AND APPLICABLE FORMATION

NO.	IADC	recommend parameters		formation
		WOB KN/mm	RPM r/min
1	116,117	0.35~0.8	150~80	Extremly soft formation with low compressive strength and high drillability,such clay,mudstone,cretaceous
2	126,127	0.35~0.9	150~70	Soft formation with low compressive strength and high drillability,such as mudstone,gypsum,salinastone,soft shale,soft limestone
3	136,137	0.35~1.0	120~60	Soft to mid-soft formation with low compressive strength and high drillability,such mid-soft shale,anhydrite,mid-soft limestone,mid-soft sandstone and soft formation with hard interbeds
4	216,217	0.4~1.0	100~60	Soft to medium formation with low compressive strength,such as mid-soft shale,mid -soft limestone,mid-soft sandstone and soft formation with hard interbeds
5	246,247	0.4~1.0	80~50	Mid-hard formation with high compressive strength,such as hard shale,limestone,sandstone and dolomite
6	417,437,447	0.35~0.9	150~70	Extremely soft formation with low compressive strength and high drillability,such as clay,mudstone,cretaceous,gypsum,salinastone,soft shale and soft limestone
7	517,527	0.35~1.0	140~60	soft formation with low compressive strength ,such as mudstone,gypsum,salinastone,soft shale and soft limestone
8	537,547	0.45~1.0	120~50	Soft to medium formation with low compressive strength,such as mid-soft shale,mid -soft limestone,mid-soft sandstone and medium formation with harder abrasiveness interbeds
9	617,627	0.45~1.1	90~50	Mid-hard formation with high compressive strength,such as hard shale,limestone,sandstone,and dolomite
10	637	0.5~1.2	80~40	Hard formation with high compressive strength,such as sandstone,limestone,dolomite and anhydrite,marble

Note :The upper limits of WOB and RPM in above table should not be used simultaneously.

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FAQ:
1.Q:What kind of packing do you have?
A: Wooden case free of fumigation;cartons;packing can be customized.







2.Q:What is your price advantage?
  A:We are 100% factory directly sales,API production process guarantee,Provide customized services for brand processing.
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